Article
Environmental Sciences
Jinlan Zhang, Lihong Xie, Qiyan Ma, Yiyang Liu, Jie Li, Zhifeng Li, Shangyi Li, Tingting Zhang
Summary: Ball milling technique was introduced to modify Zero-valent iron biochar composites (ZVI/BC) for the removal of Cr(VI). Results showed that the maximum Langmuir adsorption capacity for Cr(VI) increased 2.08 times after ball milling. The initial adsorption rate also significantly increased. The improved dispersion of ZVI, enhanced contact between ZVI and biochar, and increased oxygen-containing functional groups in biochar contributed to the enhanced removal of Cr(VI).
Article
Geochemistry & Geophysics
Weige Luo, Zheng Zeng, Liang Bian
Summary: This study evaluated the effect of lattice substitution on hexavalent chromium adsorption by different clay minerals, revealing differences in adsorption capacity among various isomorphs and analyzing factors such as key populations and band structures. The research also indicated that structural Mg has minimal influence on hexavalent chromium adsorption, contributing to a better understanding of modified clay minerals applications.
Article
Biochemistry & Molecular Biology
Qixia Chan, Fuqiang Wang, Lidong Shi, Xue Ren, Tongjun Ren, Yuzhe Han
Summary: The study investigated the bioaccumulation and immune responses of sea cucumbers A. japonicus exposed to dietary Cr6+. Results showed the order of Cr accumulation in tissues and changes in enzyme activities with different concentrations of Cr6+ exposure. The study provided important insights into the effects of chronic dietary exposure of Cr6+ on sea cucumbers.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
(2022)
Article
Chemistry, Physical
Xiang Xu, Yang You, Xingyu Liu, Dafu Wei, Yong Guan, Anna Zheng
Summary: The study found that 0.1-0.5 wt% of multi-wall carbon nanotubes can prevent the auto-oxidation degradation of fluorosilicone rubber by scavenging alkyl radicals, showing antioxidant effect. Density functional theory calculations revealed that carbon nanotubes are an open-shell system capable of reacting with highly reactive radicals.
Article
Engineering, Environmental
Elliott M. Hamilton, Scott D. Young, Elizabeth H. Bailey, Olivier S. Humphrey, Michael J. Watts
Summary: Microdialysis coupled with high-performance liquid chromatography-inductively coupled plasma mass spectrometry (HPLC-ICP-MS) allows for continuous sampling and simultaneous detection of Cr-VI in soil solution, offering improved temporal resolution and a significant reduction in analysis time.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Xuying Guo, Zhiyong Hu, Xinle Gao, Yanrong Dong, Saiou Fu
Summary: In this study, fly ash-loaded nano-FeS composites were found to have good performance in the removal of Cr(VI) and total chromium, providing a possible solution for effective elimination of these toxic heavy metals.
Article
Energy & Fuels
Jiyun Tang, Xin Zhang, Xiaoyang Zhang, Xiaoyu Li, Juan Chen, Yong Dong
Summary: This study investigates the transformation pattern of Cr and its adsorption behavior on γ-Fe2O3 during the thermal disposal of MSW, using reaction kinetics and density functional theory. The results provide insights into the interactions between Cr species and γ-Fe2O3.
Article
Engineering, Environmental
Zeenat Arif, Naresh Kumar Sethy
Summary: This paper explores the innovative approach of using a green route synthesized cost-effective bi-functional material to eliminate toxic hexavalent chromium commonly found in tannery wastewater. By optimizing the process conditions, high rejection rate and photocatalytic reduction can be achieved.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Biology
Ju-Wook Lee, Jun-Hwan Kim, Deok-Chan Lee, Hyun-Jeong Lim, Ju-Chan Kang
Summary: This study investigated the effects of hexavalent chromium exposure on juvenile olive flounders and found that high concentrations of hexavalent chromium exposure caused significant alterations in antioxidant responses, neurotransmitters, stress, and immune responses. This is important for accurately assessing the toxic effects of hexavalent chromium on aquatic organisms.
Article
Engineering, Environmental
Cesar Mario Laureano-Anzaldo, Martin Esteban Gonzalez-Lopez, Aida Alejandra Perez-Fonseca, Luis Emilio Cruz-Barba, Jorge Ramon Robledo-Ortiz
Summary: This study demonstrates the enhancement of Cr(VI) uptake performance by supporting chitosan on a porous composite using APTES as a silanizing agent through a simple and green method. Batch and fixed-bed column adsorption experiments show high adsorption capacity and fast equilibrium rate of the silanized composite. In column regeneration, utilizing an alternative desorbing configuration minimizes the eluted volume and improves the behavior of the adsorbent in multiple cycles.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Biology
Tooba Nauroze, Shaukat Ali, Lubna Kanwal, Tafail Akbar Mughal, Shagufta Andleeb, Chaman Ara
Summary: This study aimed to investigate the harmful effects of hexavalent chromium on the reproductive system of male mice and the ameliorative effect of Nigella sativa and Nigella sativa-mediated silver nanoparticles. The results showed that chromium exposure significantly decreased sperm characteristics, hormones, antioxidant capacity, and the number of germ cells, while increasing levels of follicle-stimulating hormone and the size of germ cells. Administration of Nigella sativa and Nigella sativa-mediated silver nanoparticles reduced the toxicity of chromium.
SAUDI JOURNAL OF BIOLOGICAL SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Xuying Guo, Xinle Gao, Saiou Fu, Guoliang Jiang, Yanrong Dong, Zhiyong Hu
Summary: In this study, lignite-loaded nano FeS adsorbing material was prepared and used to treat acidic chrome-containing wastewater. The results showed that the method achieved significant removal of Cr(VI) and total chromium within 25 days, and the effluent pH met the discharge standards. Analysis indicated that the reducing groups in nFeS-lignite participated in the reduction reaction of Cr(VI) and were fixed on the surface in the form of sulfide and hydroxide precipitation.
Article
Engineering, Environmental
Xitong Wang, Hao Li, Huayan Huang, Huanyan Luo, Shihua Luo, Lili Jiang, Su Feng, Heng Xu
Summary: The study found that strain TH-1, a Cr(VI) reducing bacterium, had great potential to efficiently remove Cr(VI) from contaminated sites under different environmental conditions. The optimal growth conditions and reduction mechanisms of the strain were identified, highlighting its significance for the remediation of Cr(VI) contaminated environmental sites.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Xiao Tan, Yinjie Zhang, Meng Liu, Jinman Cao, Guilan Duan, Jun Cui, Aijun Lin
Summary: In this study, a novel layered double hydroxide was prepared through ultrasonic-assisted co-precipitation method, which can efficiently remove Cr(VI) contamination in water and has good removal effects at different pH ranges. The results of the study indicate that U-Fe/Al-LDH is a promising remediation agent and a feasible method for Cr(VI) removal.
Article
Multidisciplinary Sciences
Tianyi Huang, Simone B. Moos, Edward A. Boyle
Summary: Research findings in the eastern tropical North Pacific (ETNP) oxygen-deficient zone (ODZ) support theoretical and experimental studies predicting that lighter chromium is preferentially reduced in low-oxygen environments and residual dissolved chromium becomes heavier due to removal of particl-reactive Cr(III) on sinking particles. Microbial activity, dependent on sinking organic matter flux, may be the dominant mechanism for chromium transformation, rather than a simple inorganic chemical conversion.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Biochemistry & Molecular Biology
Gabriela Y. Campos Espinosa, Chibuike C. Udenigwe, Apollinaire Tsopmo
Summary: This study found that oat bran protein hydrolysates have antioxidant and bile acid-binding properties, which are important for preventing chronic diseases and stabilizing food quality.
JOURNAL OF FOOD BIOCHEMISTRY
(2022)
Article
Biochemistry & Molecular Biology
Ramak Esfandi, Issaka Seidu, William Willmore, Apollinaire Tsopmo
Summary: The study determined the antioxidant properties of hydrolyzed oat proteins and peptides, showing their ability to inhibit lipase and alpha-amylase. Some of the peptides demonstrated potential in preventing diseases such as hypertension, cardiovascular disease, cancer, diabetes, and obesity. The peptides could be used in food formulations due to their antioxidant and potential anti-obesity properties.
JOURNAL OF FOOD BIOCHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Dylan James, Ekadashi Pradhan, Seunghoon Lee, Cheol Ho Choi, Tao Zeng
Summary: Singlet fission is a desired process in photovoltaic devices for enhancing photoelectric conversion efficiency. However, the lack of appropriate chromophores has hindered its exploitation in photovoltaics. In this study, mixed-reference spin-flip time-dependent density functional theory (TDDFT) was used to investigate five dicarbonyl anthracenes and phenanthrenes, aiming to design singlet fission chromophores. Two promising candidates were identified, and it was found that the oxygen lone pair orbitals were involved in the excited states relevant to singlet fission.
CANADIAN JOURNAL OF CHEMISTRY
(2022)
Article
Chemistry, Physical
Dylan James, Ekadashi Pradhan, Tao Zeng
Summary: In this work, we designed a series of singlet fission chromophores by introducing N-oxyl fragments into anthracene, satisfying the thermodynamic energy criteria for singlet fission chromophores.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Gregoire David, Nadia Ben Amor, Tao Zeng, Nicolas Suaud, Georges Trinquier, Jean-Paul Malrieu
Summary: C-4n cyclacenes exhibit strong bond-alternation in their equilibrium geometry, transitioning from a closed-shell character to a diradical state. This paper discusses the physical factors involved in the energy difference and explores different methods for evaluating the barrier height. The most reliable results are obtained using specific wave function theory calculations.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Chemistry, Physical
Ekadashi Pradhan, Guoying Yao, Zhenyu Yang, Tao Zeng
Summary: Heavy element compounds with high symmetries often have both spin-orbit coupling and vibronic coupling, particularly in systems with tetrahedral and octahedral symmetries. To accurately describe these interactions, high quality spin-orbit vibronic Hamiltonian operators are needed. This study presents a unified Hamiltonian formalism for spin-orbit vibronic interactions in all tetrahedral and octahedral symmetries, generating Hamiltonian expansion formulas of arbitrarily high order.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Editorial Material
Biochemistry & Molecular Biology
Apollinaire Tsopmo, Farah Hosseinian
JOURNAL OF FOOD BIOCHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Guoying Yao, Liang Zhao, Tao Zeng, Zhenyu Yang
Summary: Reduced-dimensional (RD) perovskites have attractive properties for optoelectronic applications. However, the coexistence of different organic ligands commonly inhibits the formation of more complex crystal structures. In this study, a mixed-dimensional (MD) perovskite single crystal containing two types of sulfide-containing ligands was reported. X-ray diffraction confirmed the structure contains layered and isolated inorganic components. The MD perovskite showed an enlarged bandgap and isotropic optical features.
Article
Chemistry, Multidisciplinary
Zilong Yuan, Liang Zhao, Ekadashi Pradhan, Ming Lai, Tao Zeng, Zhenyu Yang
Summary: This study reports the postsynthetic crystal transformation of two-dimensional metal halide perovskites (2D MHPs) through organothiol-based reactions in solution. The swift and complete crystal interconversion of large organic cations in three types of 2D MHPs under ambient conditions has been confirmed.
Article
Chemistry, Applied
Arnaud Mbe Tchinda, Arno R. Donfack Nanfack, Jean-De-Dieu Tamokou, Germaine Matsuete-Takongmo, Apollinaire Tsopmo, Muhammad Shaiq Ali, Mathieu Tene
Summary: This study investigated the antibacterial activity of extracts and compounds from Echinops gracilis. The results showed that the extract and compounds exhibited moderate to significant antibacterial activities, with compounds 1 and 14 showing the best activity against Staphylococcus aureus and Salmonella Typhi, respectively. These findings support the traditional medicinal uses of E. gracilis.
NATURAL PRODUCT RESEARCH
(2022)
Review
Multidisciplinary Sciences
Patrick Blondin Tsafack, Apollinaire Tsopmo
Summary: Biogenic amines (BAs) are naturally occurring molecules in foods and biological systems. Their concentrations increase during food processing and storage due to microbial action. Excessive BAs indicate unsafe foods and pose risks of neurological toxicity, allergic reactions, and cardiovascular diseases. Various strategies, including elimination, inactivation, and inhibition of microbial growth, are used to control BAs in foods. Additionally, bioactive compounds, particularly polyphenols, can reduce BAs concentrations through antimicrobial activity and inhibition of enzymes involved in BA formation. However, more studies are needed to understand the mechanisms and bioavailability of these compounds.
Review
Biochemistry & Molecular Biology
Patrick Blondin Tsafack, Chen Li, Apollinaire Tsopmo
Summary: The gut microbiota plays an important role in human health, and this review focuses on its link with hypertension. The analysis shows that food peptides can prevent gut dysbiosis and display antihypertensive effects by positively affecting the production of beneficial metabolites. However, there is a lack of human studies in this area.
Article
Agriculture, Multidisciplinary
Grace Sanger, Djuhria Wonggo, Nurmelita Taher, Verly Dotulong, Aurielle Annalicia Setiawan, Happy Kurnia Permatasari, Sidik Maulana, Fahrul Nurkolis, Apollinaire Tsopmo, Bonglee Kim
Summary: This study aimed to investigate the anticancer activity of C. racemosa extracts in breast cancer cells, identify compounds, and determine the mechanism. The results showed that C. racemosa extracts exhibited significant cytotoxicity against breast cancer cells and had antioxidant activity. LC-ESI-QTOF-MS analysis identified 21 compounds with potential anticancer activity against HER2 protein.
JOURNAL OF AGRICULTURE AND FOOD RESEARCH
(2023)
Article
Food Science & Technology
Annick Arcelle Pougoue Ngueukam, Mathilde Julie Klang, Ronice Zokou, Gires Teboukeu Boungo, Barakat Koyinsola Azeez, Fabrice Djikeng Tonfack, Hilaire Macaire Womeni, Apollinaire Tsopmo
Summary: This study determined the structure of peptides in soy protein hydrolysates and found that the pepsin hydrolysate exhibited higher anti-radical and oxidative stability properties, while the trypsin hydrolysate showed pro-oxidant activity.
Article
Chemistry, Applied
Audrey A. Sinze Metiave, Alex Tchinda Tedonkeu, Jean-De-Dieu Tamokou, Arno R. Donfack Nanfack, Germaine Matsuete-Takongmo, Duplex Kamtcha Wetadieu, Apollinaire Tsopmo, Mathieu Tene
Summary: Two new stigmastane steroids were isolated from Vernonia glabra leaves, along with seventeen known compounds. These compounds showed antibacterial activity against Gram-positive and Gram-negative bacteria.
NATURAL PRODUCT RESEARCH
(2023)
Article
Chemistry, Applied
M. Graca Dias, Elsa Vasco, Francisco Ravasco, Lufsa Oliveira
Summary: This study estimated the vitamin D intake of "adults" and "elderly" populations in Portugal using the TDS methodology. The results showed that the majority of people had inadequate vitamin D intake, well below the Dietary Reference Values.
Article
Chemistry, Applied
Yanan Wang, Jiachen Shi, Yong-Jiang Xu, Chin-Ping Tan, Yuanfa Liu
Summary: This study investigates the variations in lipid digestion profiles among individuals of different ages using in vitro digestion models. The findings suggest that adults have a more comprehensive lipid digestion compared to infants, and infants tend to release shorter chain length and more saturated free fatty acids during digestion. Additionally, the particle sizes in the stomach of the elderly were consistently larger. This study enhances our understanding of how lipids with different degrees of unsaturation undergo digestion in diverse age groups.
Article
Chemistry, Applied
Hyunjong Yu, Huisu Kim, Pahn-Shick Chang
Summary: Chitosan-pectin emulsion-filled hydrogel (EFH) was developed to enhance the bioaccessibility of lipophilic bioactive compounds through intestinal delivery. The EFH, prepared without crosslinking agents, demonstrated improved mechanical strength and compactness with higher pectin concentration. It retained the emulsion at pH 2.0 and released it at pH 7.4, resulting in enhanced release of free fatty acids and improved bioaccessibility of curcumin.
Article
Chemistry, Applied
Tongze Zhang, Siqi Hong, Jia-Rong Zhang, Pin-He Liu, Siyi Li, Zixian Wen, Jianwei Xiao, Guirong Zhang, Olivier Habimana, Nagendra P. Shah, Zhongquan Sui, Harold Corke
Summary: Lactic acid fermentation significantly affects the morphology and physicochemical properties of proso millet starch, including the formation of surface indentations and small pores, decrease in gelatinization temperatures, and changes in hardness and adhesiveness.
Article
Chemistry, Applied
Liqin Kong, Feng Hong, Peng Luan, Yiping Chen, Yaoze Feng, Ming Zhu
Summary: This study presents a novel impedance biosensor using composite nanomaterials and T1R1 as a signal probe, which can competitively and ultra-sensitively detect umami intensity. The biosensor exhibits exceptional analytical performance and is suitable for food flavor evaluation.
Article
Chemistry, Applied
Kunying Lv, Yixin Yang, Qilong Li, Ran Chen, Liang Deng, Yiwei Zhang, Ning Jiang
Summary: Horse's milk, with its high nutritional value and low allergenic proteins, could be a substitute for cow's milk in infant consumption. A proteomic method was used to identify and compare milk fat globule membrane (MFGM) and whey proteins from different horse breeds. The study found differences in protein composition and functionality, which could support the development of formulas more suitable for human infants.
Article
Chemistry, Applied
Enrique Jacobo Diaz-Montana, Helene Brignot, Ramon Aparicio-Ruiz, Thierry Thomas- Danguin, Maria Teresa Morales
Summary: Sensory perception of virgin olive oil is influenced by phenols and volatiles, which are affected by the composition of the oil and biological factors. This study investigated the effect of saliva and phenols on the release of volatiles, and found that the presence of phenols decreased the release of saturated volatiles.
Article
Chemistry, Applied
Wei Zhou, Rui Zhang, Zhen Cai, Fangfang Wu, Yong Hu, Chao Huang, Kun Hu, Yun Chen
Summary: Environmentally friendly and outstanding pH-responsive cationic starch nanoparticles (CSNP) were prepared from pH-sensitive starch. CSNP exhibited nanosize and regular sphere, highly free-flowing molecular chains, and demonstrated excellent pH responsiveness through multiple emulsion/demulsification transitions.
Article
Chemistry, Applied
Andrea Koo, Vinayak Ghate, Weibiao Zhou
Summary: This study suggests that direct seeding may negatively affect the nutritional quality of crops, causing a decrease in ascorbic acid, vitamin K, and total glucosinolate content.
Article
Chemistry, Applied
Tonghao Du, Yazhou Xu, Xiaoyan Xu, Shijin Xiong, Linli Zhang, Biao Dong, Jinqing Huang, Tao Huang, Muyan Xiao, Tao Xiong, Mingyong Xie
Summary: This study successfully improved the ACE inhibitory activity of black sesame seeds by fermenting them with Lactobacillus Plantarum NCU116 and hydrolyzing them using acid protease. The RF-PSO model was used to predict the ACE inhibitory activity during the hydrolysis process. Eight peptides with ACE inhibitory activity were identified from fermented black sesame seed hydrolysates after separation and screening.
Article
Chemistry, Applied
Yao Liu, Songyi Lin, Kexin Liu, Shan Wang, Qiaozhen Liu, Na Sun
Summary: This study analyzed the structural changes of shrimp proteins during digestion, predicted the immunodominant epitopes, and validated their allergenicity. The results showed that shrimp proteins were degraded into peptides during digestion, but still carried IgE epitopes that trigger allergic reactions.
Article
Chemistry, Applied
Tiantian Fu, Hongwei Cao, Yu Zhang, Xiao Guan
Summary: This study investigates the impact of milling on the active components in rice, with a focus on the stability and bioaccessibility of phenols, VB1, and alpha-GABA during cooking and digestion. The findings show that milling exacerbates the instability of gamma-GABA during cooking and VB1 during digestion, and it affects the bioaccessibility of these active compounds.
Article
Chemistry, Applied
Zhihao Yang, Yanru Hou, Min Zhang, Puxin Hou, Chang Liu, Lu Dou, Xiaoyu Chen, Lihua Zhao, Lin Su, Ye Jin
Summary: This study investigated the molecular mechanism of feeding regimes on lamb flavor by using TMT labeling combined with MS. The results showed that pasture-fed groups had higher levels of amino acids and volatile flavor substances compared to concentrate-fed groups. Additionally, several differentially abundant proteins associated with lamb flavor were identified.
Article
Chemistry, Applied
Zixuan Xie, De Zhang, Junyu Zhu, Qianqian Luo, Jun Liu, Jingtao Zhou, Xiaoyong Wang, Yuqiong Chen, Zhi Yu, Dejiang Ni
Summary: This study investigated the acidification of aroma-enhanced black tea during storage. Analysis of non-volatile substances and organic acids using UPLC-Q-TOF/MS and HPLC revealed a decrease in soluble sugars and amino acids, while an increase in organic acids such as oxalic acid, malic acid, and quinic acid. In vitro experiments further demonstrated that the acidification is a result of the decomposition of sugars and amino acids by heating, as well as the oxidation of aromatic aldehydes. Additionally, the study showed that the taste composition of tea infusion is altered, with reduced amino acids, catechins, soluble sugars, and flavonoids. This research provides a theoretical basis for improving the quality of black tea.
Article
Chemistry, Applied
Lin Wang, Falai Ma, Zihan Li, Yan Zhang
Summary: This study developed time-temperature integrators based on amyloglucosidase@Cu3(PO4)2 nanoflowers for monitoring the freshness of chilled pork. The results showed that the integrators were highly reliable and accurate in predicting the quality of chilled pork.